Most likely he was a seismologist and could see something brewing. I would guess some forums would have been discussing the activity in Japan before the big one came.

But if he was an 'insider' with foreknowledge of a coming disaster...

Then my guess is that all info that follows the prediction is disinfo. In this case, he says "solar flare" and "dollar crash."

So far, since the quake, the dollar has actually gone up.

The good info is meant to suck you in so you swallow the bad info, and waste energy/money.